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Title: Corrective Action Investigation Plan for Corrective Action Unit 262: Area 25 Septic Systems and Underground Discharge Point, Nevada Test Site, Nevada, Revision No. 1 (9/2001)

This corrective action investigation plan contains the U.S. Department of Energy, Nevada Operations Office's approach to collect data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 262 under the Federal Facility Agreement and Consent Order. Corrective Action Unit 262 consists of nine Corrective Action Sites (CASs): Underground Storage Tank (25-02-06), Septic Systems A and B (25-04-06), Septic System (25-04-07), Leachfield (25-05-03), Leachfield (25-05-05), Leachfield (25-05-06), Radioactive Leachfield (25-05-08), Leachfield (25-05-12), and Dry Well (25-51-01). Situated in Area 25 at the Nevada Test Site (NTS), sites addressed by CAU 262 are located at the Reactor-Maintenance, Assembly, and Disassembly (R-MAD); Test Cell C; and Engine-Maintenance, Assembly, and Disassembly (E-MAD) facilities. The R-MAD, Test Cell C, and E-MAD facilities supported nuclear rocket reactor and engine testing as part of the Nuclear Rocket Development Station. The activities associated with the testing program were conducted between 1958 and 1973. Based on site history collected to support the Data Quality Objectives process, contaminants of potential concern (COPCs) for the site include oil/diesel-range total petroleum hydrocarbons, volatile organic compounds, semivolatile organic compounds, polychlorinated biphenyls, Resource Conservation and Recovery Act metals, and gamma-emitting radionuclides, isotopic uranium, isotopic plutonium, strontium-90, and tritium.more » The scope of the corrective action field investigation at the CAU will include the inspection of portions of the collection systems, sampling the contents of collection system features in situ of leachfield logging materials, surface soil sampling, collection of samples of soil underlying the base of inlet and outfall ends of septic tanks and outfall ends of diversion structures and distribution boxes, collection of soil samples from biased or a combination of biased and random locations within the boundaries of the leachfields, collection of soil samples at stepout locations (where needed) to further define lateral and vertical extent of contamination, conduction of discrete field screening, and logging of soil borings and collection of geotechnical samples to assess soil characteristics. Historical information indicates that significant quantities of radioactive material were produced during the rocket engine testing program, some of which was disposed of in radioactive waste disposal systems (posted leachfields) at each of these locations. Process and sanitary effluents were generated and disposed of in other leachfields. The results of this field investigation will be used to develop and evaluate corrective action alternatives for these CASs.« less
Authors:
Publication Date:
OSTI Identifier:
775348
Report Number(s):
DOE/NV--629-REV 1
TRN: US0300637
DOE Contract Number:
AC08-97NV13052
Resource Type:
Technical Report
Resource Relation:
Other Information: Supercedes report DE00775348; PBD: 20 Jul 2000; PBD: 20 Jul 2000
Research Org:
IT Corp., Las Vegas, NV (US)
Sponsoring Org:
USDOE, Nevada Operations Office (US)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 33 ADVANCED PROPULSION SYSTEMS; 54 ENVIRONMENTAL SCIENCES; NEVADA TEST SITE; ORGANIC COMPOUNDS; POLYCHLORINATED BIPHENYLS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTE DISPOSAL; RADIOISOTOPES; REACTOR MAINTENANCE; RESOURCE CONSERVATION; ROCKET ENGINES; STRONTIUM 90; UNDERGROUND STORAGE CORRECTIVE ACTION UNIT; CAU 262; FEDERAL FACILITY AGREEMENT AND CONSENT ORDER; CORRECTIVE ACTION SITES; CAS; UNDERGROUND STORAGE TANK; 25-02-06; SEPTIC SYSTEMS A AND B; 25-04-06; SEPTIC SYSTEM; 25-04-07; LEACHFIELD; 25-05-03; 25-05-05; 25-05-06; RADIOACTIVE LEACHFIELD; 25-05-08; 25-05-12; DRY WELL; 25-51-01; AREA 25; NEVADA TEST SITE; NTS.